Microsoft security alert.

Advisory overview

Qualys Vulnerability R&D Lab has released new vulnerability checks in the Qualys Cloud Platform to protect organizations against 71 vulnerabilities that were fixed in 6 bulletins announced today by Microsoft. Customers can immediately audit their networks for these and other new vulnerabilities by accessing their Qualys subscription. Visit Qualys Security Blog to prioritize remediation.

Non-Qualys customers can audit their network for these and other vulnerabilities by signing up for a Qualys Free Trial, or by trying Qualys Community Edition.

Vulnerability details

Microsoft has released 6 security bulletins to fix newly discovered flaws in their software. Qualys has released the following checks for these new vulnerabilities:

• Microsoft Edge Security Update for April 2018

  Severity

  Critical 4

  Qualys ID

  91443

  Vendor Reference

  KB4093107, KB4093109, KB4093111, KB4093112, KB4093119

  CVE Reference

  CVE-2018-0892, CVE-2018-0979, CVE-2018-0980, CVE-2018-0990, CVE-2018-0993, CVE-2018-0994, CVE-2018-0995, CVE-2018-0998, CVE-2018-1019, CVE-2018-1023

  CVSS Scores

  Base 7.6 / Temporal 6

  Description

  Microsoft Edge is a web browser developed by Microsoft that replaces Internet Explorer as the default web browser.
  Microsoft Edge suffers multiple security vulnerabilities. The most severe of the vulnerabilities could allow remote code execution.

  KB Articles associated with the update:
  1) KB4093109
  2) KB4093119
  3) KB4093107
  4) KB4088782
  5) KB4093111
  

  QID Detection Logic (Authenticated):
  Operating Systems: All versions of Windows 10 and Windows Server 2016
  This QID checks for the file version of %windir%\System32\edgehtml.dll
  The following KBs are checked:
  The patch version is 11.0.10240.17831 (KB4093111)
  The patch version is 11.0.10586.1540(KB4093109)
  The patch version is 11.0.14393.2189(KB4093119)
  The patch version is 11.0.15063.1029(KB4093107)
  The patch version is 11.0.16299.371(KB4093112)
  

  Consequence

  Successful exploitation of the vulnerability allows:

  1) Remote Code Execution
  2) Information Disclosure

  Solution

  For more information, customers are advised to refer the Security Update Guide.

  Patches:
  The following are links for downloading patches to fix these vulnerabilities:
  Microsoft Security Update Guide

• Microsoft Internet Explorer Security Update for April 2018

  Severity

  Critical 4

  Qualys ID

  100334

  Vendor Reference

  KB4092946, KB4093107, KB4093109, KB4093111, KB4093112, KB4093114, KB4093118, KB4093119, KB4093123

  CVE Reference

  CVE-2018-0870, CVE-2018-0981, CVE-2018-0987, CVE-2018-0988, CVE-2018-0989, CVE-2018-0991, CVE-2018-0996, CVE-2018-0997, CVE-2018-1000, CVE-2018-1001, CVE-2018-1004, CVE-2018-1018, CVE-2018-1020

  CVSS Scores

  Base 9.3 / Temporal 7.7

  Description

  Internet Explorer is a web-browser developed by Microsoft which is included in Microsoft Windows Operating Systems.

  Microsoft has released Cumulative Security Updates for Internet Explorer which addresses various vulnerabilities found in Internet Explorer 9 (IE 9), Internet Explorer 10 (IE 10) and Internet Explorer 11 (IE 11). The security updated is rated Moderate for for Internet Explorer 9 (IE 9) and Internet Explorer 10 (IE 10) and Critical for Internet Explorer 11 (IE 11). The most severe of the vulnerabilities could allow remote code execution.

  KB Articles associated with the Update:
  1)4093118
  2)4092946
  3)4093109
  4)4093114
  5)4093119
  6)4093111
  7)4093107
  8)4093112
  9)4093123

  QID Detection Logic (Authenticated):
  Operating Systems: Windows Server 2008, Windows Server 2008 R2, Windows 7, Windows 8.1, Windows RT 8.1, Windows10, Windows Server 2012, Windows Server 2012 R2, Windows Server 2016
  This QID checks for the file version of %windir%\System32\mshtml.dll
  The following KBs are checked:
  The patch version is 11.0.9600.18978 (KB4093118 or KB4092946 or KB4093114)
  The patch version is 11.0.10240.17831 (KB4093111)
  The patch version is 11.0.10586.1540 (KB4093109)
  The patch version is 11.0.14393.2189 (KB4093119)
  The patch version is 11.0.15063.1029 (KB4093107)
  The patch version is 11.0.16299.371(KB4093112)
  The patch version is 10.0.9200.22411 (KB4092946 or KB4093123)
  The patch version is 9.0.8112.21213 (KB4092946)
  

  Consequence

  Successful exploitation of the vulnerability will lead to:

  1) Remote Code Execution
  2) Information Disclosure
  

  Solution

  For more information, Customers are advised to refer the Security Update Guide.

  Patches:
  The following are links for downloading patches to fix these vulnerabilities:
  Microsoft Security Update Guide

• Microsoft Office and Microsoft Office Services and Web Apps Security Update April 2018

  Severity

  Critical 4

  Qualys ID

  110316

  Vendor Reference

  KB4011586, KB4011628, KB4011712, KB4011717, KB4011719, KB4018288, KB4018311, KB4018319, KB4018328, KB4018330, KB4018336, KB4018337, KB4018339, KB4018341, KB4018342, KB4018343, KB4018344, KB4018347, KB4018350, KB4018353, KB4018354, KB4018355, KB4018356, KB4018357, KB4018359, KB4018360, KB4018362

  CVE Reference

  CVE-2018-0920, CVE-2018-0950, CVE-2018-1005, CVE-2018-1007, CVE-2018-1011, CVE-2018-1014, CVE-2018-1026, CVE-2018-1027, CVE-2018-1028, CVE-2018-1029, CVE-2018-1030, CVE-2018-1032, CVE-2018-1034

  CVSS Scores

  Base 9.3 / Temporal 7.7

  Description

  Microsoft releases security updates on April 2018 to fix multiple security vulnerabilities:

  This security updates contain following KBs:
  KB4011586 KB4011628 KB4011712 KB4011717 KB4011719 KB4018288 KB4018311 KB4018319 KB4018328 KB4018330 KB4018336 KB4018337 KB4018339 KB4018341 KB4018342 KB4018343 KB4018344 KB4018347 KB4018350 KB4018353 KB4018354 KB4018355 KB4018356 KB4018357 KB4018359 KB4018360 KB4018362 QID Detection Logic:
  This authenticated QID checks the file versions from above Microsoft KB article with the versions on affected office system.

  Consequence

  An attacker who successfully exploited the vulnerability could run arbitrary code in the context of the current user.

  Solution

  Customers are advised to refer to Microsoft Security Guidance for more details pertaining to this vulnerability.

  Patches:
  The following are links for downloading patches to fix these vulnerabilities:
  Microsoft Office and Microsoft Office Services and Web Apps Security Update April 2018(Office)

• Microsoft Visual Studio Security Update for April 2018

  Severity

  Critical 4

  Qualys ID

  91442

  Vendor Reference

  CVE-2018-1037

  CVE Reference

  CVE-2018-1037

  CVSS Scores

  Base 4.3 / Temporal 3.2

  Description

  An information disclosure vulnerability exists when Visual Studio improperly discloses limited contents of uninitialized memory while compiling program database (PDB) files. To take advantage of the vulnerability, an attacker would require access to an affected PDB file created using a vulnerable version of Visual Studio. An attacker would have no way to force a developer to produce this information disclosure. The security update addresses the vulnerability by correcting how PDB files are generated when a project is compiled.

  Affected Software:
  Microsoft Visual Studio 2010 Service Pack 1
  Microsoft Visual Studio 2012 Update 4
  Microsoft Visual Studio 2013 Update 5
  Microsoft Visual Studio 2015 Update 3
  Microsoft Visual Studio 2017
  Microsoft Visual Studio 2017 Version 15.6.6
  Microsoft Visual Studio 2017 Version 15.7 Preview

  QID Detection Logic:
  This authenticated QID verifies the file versions of mspdbcore.dll from the following registry entries:
  HKLM\SOFTWARE\Microsoft\VisualStudio.0\InstallDir
  HKLM\SOFTWARE\Wow6432Node\Microsoft\VisualStudio.0\InstallDir
  HKLM\SOFTWARE\Microsoft\VisualStudio.0\InstallDir
  HKLM\SOFTWARE\Wow6432Node\Microsoft\VisualStudio.0\InstallDir

  NOTE: As of now, this QID does not check for Microsoft Visual Studio 2017 patches.

  Consequence

  An attacker who took advantage of this information disclosure could view uninitialized memory from the Visual Studio instance used to compile the PDB file.

  Solution

  Customers are advised to refer to CVE-2018-1037 for updates pertaining to this vulnerability.

  Patches:
  The following are links for downloading patches to fix these vulnerabilities:
  CVE-2018-1037

• Microsoft Windows Adobe Flash Player Security Update for April 2018 (ADV180007)

  Severity

  Urgent 5

  Qualys ID

  100333

  Vendor Reference

  ADV180007

  CVE Reference

  CVE-2018-4932, CVE-2018-4933, CVE-2018-4934, CVE-2018-4935, CVE-2018-4936, CVE-2018-4937

  CVSS Scores

  Base 9.3 / Temporal 7.7

  Description

  This security update resolves vulnerabilities which are described in the Adobe Security Bulletin APSB18-08, if installed on any supported edition of Windows Server 2016, Windows Server 2012 R2, Windows Server 2012, Windows 10, Windows 10 Version 1511, Windows 10 Version 1607, Windows 10 Version 1703, Windows 10 Version 1709, Windows 8.1, or Windows RT 8.1.

  QID Detection Logic:
  Operating Systems: Windows 8.1, Windows RT 8.1, Windows10, Windows Server 2012, Windows Server 2012 R2, Windows Server 2016
  This authenticated QID checks for the file version of %windir%\System32\Macromed\Flash\Flash.ocx for file versions lesser than 29.0.0.140.

  KB Articles associated with this update are: ADV180007

  Consequence

  Successful exploitation allows an attacker to execute code remotely and bypass security restrictions to gain access to sensitive information.

  Solution

  Customers are advised to follow KB4093110 for instructions pertaining to the remediation of these vulnerabilities.

  Patches:
  The following are links for downloading patches to fix these vulnerabilities:
  KB4093110

• Microsoft Windows Security Update April 2018

  Severity

  Critical 4

  Qualys ID

  91441

  Vendor Reference

  KB4091756, KB4093107, KB4093108, KB4093109, KB4093111, KB4093112, KB4093114, KB4093115, KB4093118, KB4093119, KB4093122, KB4093123, KB4093223, KB4093224, KB4093227, KB4093257, KB4093478, KB4100480

  CVE Reference

  CVE-2018-0887, CVE-2018-0890, CVE-2018-0956, CVE-2018-0957, CVE-2018-0960, CVE-2018-0963, CVE-2018-0964, CVE-2018-0966, CVE-2018-0967, CVE-2018-0968, CVE-2018-0969, CVE-2018-0970, CVE-2018-0971, CVE-2018-0972, CVE-2018-0973, CVE-2018-0974, CVE-2018-0975, CVE-2018-0976, CVE-2018-1003, CVE-2018-1004, CVE-2018-1008, CVE-2018-1009, CVE-2018-1010, CVE-2018-1012, CVE-2018-1013, CVE-2018-1015, CVE-2018-1016, CVE-2018-1038, CVE-2018-8116

  CVSS Scores

  Base 9.3 / Temporal 7.7

  Description

  Microsoft has released Cumulative Security Updates for Windows which addresses the following vulnerabilities:

  An elevation of privilege vulnerability exists when the Windows kernel fails to properly handle objects in memory. An attacker who successfully exploited this vulnerability could run arbitrary code in kernel mode. (CVE-2018-1038)
  An information disclosure vulnerability exists when the Windows kernel fails to properly initialize a memory address. (CVE-2018-0887)
  A security feature bypass vulnerability exists when Active Directory incorrectly applies Network Isolation settings. To exploit this vulnerability, an attacker could run a specially crafted application. (CVE-2018-0890)
  A denial of service vulnerability exists in the HTTP 2.0 protocol stack (HTTP.sys) when HTTP.sys improperly parses specially crafted HTTP 2.0 requests. (CVE-2018-0956)
  An information disclosure vulnerability exists when Windows Hyper-V on a host operating system fails to properly validate input from an authenticated user on a guest operating system. (CVE-2018-0957)
  An information disclosure vulnerability exists when the Windows kernel improperly handles objects in memory.(CVE-2018-0960)
  
  

  QID Detection Logic (Authenticated):
  Operating Systems: Windows Server 2008, Windows Server 2008 R2, Windows 7, Windows 8.1, Windows RT 8.1, Windows10, Windows Server 2012, Windows Server 2012 R2, Windows Server 2016
  This QID checks for following file versions %windir%\System32\Win32k.sys for all affected OS except Windows 10 and Windows 16:
  The patch version of 6.0.6002.24344 (KB4093224)
  The patch version of 6.1.7601.24093 (KB4093108 or KB4093118)
  The patch version of 6.2.9200.22413 (KB4093122 or KB4093123)
  The patch version of 6.3.9600.18979 (KB4093114 or KB4093115)
  
  This QID checks for following file versions %windir%\System32\Win32kfull.sys.exe for Windows 10 and Windows 16:
  The patch version of 10.0.10240.17831 (KB4093111)
  The patch version of 10.0.10586.1540 (KB4093109)
  The patch version of 10.0.14393.2189 (KB4093119)
  The patch version of 10.0.15063.1029 (KB4093107)
  The patch version of 10.0.16299.371 (KB4093112)
  
  This QID checks for following files and its versions for Windows 2008 SP2:
  The patch version of %windir%\System32\Advapi32.dll 6.0.6002.24335 (KB4093478)
  The patch version of %windir%\System32\Msexcl40.dll 4.0.9801.3 (KB4093257)
  The patch version of %windir%\system32\Atmfd.dll 5.1.2.253 (KB4093223)
  The patch version of %windir%\System32\Basecsp.dll 6.0.6002.24329 (KB4093227)
  The patch version of %windir%\system32\Wsnmp32.dll 6.0.6002.24398 (KB4091756)
  

  Note: KB4091756 was re-released on June 12, 2018 for Windows Server 2008 SP2
  

  Consequence

  Successful exploitation allows an attacker to execute arbitrary code and take control of an affected system.

  Solution

  Customers are advised to refer to Microsoft Security Guidance for more details pertaining to this vulnerability.

  Patches:
  The following are links for downloading patches to fix these vulnerabilities:
  KB4091756
  KB4093107
  KB4093108
  KB4093109
  KB4093111
  KB4093112
  KB4093114
  KB4093115
  KB4093118
  KB4093119
  KB4093122
  KB4093123
  KB4093223
  KB4093224
  KB4093227
  KB4093257
  KB4093478
  KB4100480

Access for Qualys Customers

Platforms and Platform Identification

Technical Support

For more information, customers may contact Qualys Technical Support.

About Qualys

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